The thing is a lot of those guys were at bama as GAs so he got a chance to watch those guys grow and develop. And when he got his shot as a hc he gave them opportunity.
You don’t have to have the resume all the time. Sometimes it takes foresight. Schuman uga dc didn’t have some extensive resume but he is one of the best young minds in cfb. Jim leohnard same thing. Hartline just starting coaching at osu in 2017